Ghost of Mae Nak (Thai: นาค รักแท้/วิญญาณ/ความตาย) is a 2005 Thai horror film thriller about a protecting ghost directed and written by British director Mark Duffield. The film stars Pataratida Pacharawirapong, Siwat Chotchaicharin and Porntip Papanai as the ghost.

Set in modern Bangkok, the life of groom Mak is disturbed, by successive nightmares with a ghost woman, Mae Nak, an ancient Thai legend. He meets his beloved fiancée Nak to acquire an antique brooch and an old abandoned house in Phra Khanong through an unscrupulous real estate agent Angel and they decide to buy the property.
 
Siwat Chotchaicharin as Mak.
After their wedding, two small-time thieves break into the house and steal their gifts and other objects. Mak happens to see the criminals on the streets of Bangkok selling his goods. He chases the burglars and they run their van over Mak, who falls into a deep coma. The ghost Mae Nak protects the young couple against Angel and the burglars, but in return she holds the soul of Mak.
 
Nak finds the remains of Mae Nak in an ancient cemetery, and with some monks, they exorcise Mae Nak from Mak using the ancient brooch and release her spirit.